Spring suspension for vehicles



J. H. CHANDLER. SPRINGVSUSPENSION FOR VEHICLES.

APPLICATION FILED MAX-29,1922,

1,4336%, Patented Oct. 11922.

a SHEETS-SHEET 1.

J. H.v CHANDLER.

SPRlNG SUSPENSION FOR VEHICLES. APPLICATION FILED MAY 23, 1922.

a SHEE-TSSHEET 2.

i. H CHANDLER.

SPRING SUSPENSION FOR VEHICLESL APPLICATION FILED MAY 29. 1922 L43L632 Pate aed @ct. i922 3SHEE1S-- T 3.

MZZT.

a pose of which is to Patented Uctltl, i220 JAMES na en e tai ment Lenn n, GLA

tts

seem asses es we s.

' "a cati n are an a To all whom it may concern Be it known that 1, JAMES HENRY (31mm) nnafresiding atLondon', England, a subject of the King of Great Britain and Ireland, have invented certain new and useful Im- 1 provements' in Spring Suspensions for Vele w ich th l vine" is we e statement ocks, than whih thereaay be provided'i n ad ition'tawetn said vehicle parts bracketand link'conneo'tions'a puepermit vertical adj u'stment or the springs." The present invention comprises anim proved. and simplified construction or a rrang m l o such a spring suspension in which there isprovided at each side a number of freely mounted helical springs located closely together side by side'andeach having its opposite ends loosely housed in cups or boxes carried by the vehicleframing or equivalent and an axle carrying member respectively, and said vehicle parts being interconnected by rigid brackets connected to the framing and pivoted links connecting the free ends of said brackets with the axle carrying member.

"With such a construction both vertical and horizontal shocks are absorbed, and when the wheels encounter obstructions the suspension device will deviate from the vertical whereby certain of the springs will be compressed more than others, allowing the centre of the wheel axle to shift in the longitudinal direction of the vehicle to provide what may be termed a flexible centre be tween different axles of a vehicle,

In addition the provision of the bracket and link connections referred to permits the vehicle axles to be maintained in parallel relation.

The invention further comprises compen sating means adapted to ensure that the suspension device shall under all conditions return to its proper vertical or normal position after absorption of shock.

An embodiment of the invention is illustrated in the accompanying drawings in which Fig. 1 is a side elevation of a vehicle hicle.

wee. s al nateaeia chassis Provided With the improved 5 4313611- s1on. a

"Fig. is a rear end elevation thereof and F 1g. 3 s a side elevation on an enlarged scale showing the compensating means applied to the spring suspension; v

The spring suspension comprises a'box or series of cups 6 shown at the lefthand side 3 of Fig. 1 asattached directly to the main frame a orthe vehicle, and at the right hand of Figjl asa'ttached to a forecarriage turning name-m The said series of "cups receivesthe upper "ends of a corresponding number 'of "helical springs 0 the lowerends of which "are received by or-housed in similar cups :6 shown as carried by a frame member etc which the axle bearing 01 or tread,'respe ctively, or equivalent, is attached. 6Z2

, Relativemovements to absorb vertical and horizontal shocks are thus permitted between the frame a or turning frame a and the parts al or 01 9 respectively, and consequently between the axle'd or (Z and said chassis parts a ora .Tl1e frame member a; and consequently the whole suspension dc vice are suspended from thefmain frame aor from the turning frame a be, by means of brackets f, rigidly secured at their upper ends to the main frame a or turning frame a and having pivoted to their lower ends the outer ends of links 7, the opposite or inner ends of which a plate f forming part of the frame member 0. By such construction the boxes or cups ,6 and e at one side of the vertical centre of the suspension device can deviate from the horizontal in an upward direction, thus 95 or springs at the rear side of the suspension, 105

which are subjected to greater compression than the others in absorbing shocks under running conditions, will tend in time to lose to some extent their rebounding qualities,

resulting in the suspension device remaining 110 permanently somewhat out of the vertical even when shocks have been absorbed and "designates the wheels of the ve- 75 as the case may are pivoted to flexible centre between obstructions passed, and to provide against such a contingency according to the present invention I employ an improved compensating device to ensure under all conditions that the said device will return to its proper vertical or normal position after absorption of shock. This compensating device is illustrated in Fig. 3 of the drawings and comprises an auxiliary coiled spring 9 carried by a threaded rod g pivoted at one end to.

a lug g on the lower end of the frame member'c, and having its other end adjustably and pivotally connected to a lever or link It fulerumed at 71, on the suspension link 7 and having a pin and slot connection k with the bracket f. I

From this construction it will be apparent, on any deviation ofthe suspension device from its vertical centre due tocompression of certain of the springs c more than others in absorbing shocks, that the auxiliary spring 9 acting through the links it and To now refer particularly to Fig. 3, that figure also shows a sliding connection between a link 7' and the frame member 0 at that side of the suspension which 18 at the front under normal running conditions, this 1 connection being produced by slotting as at f the end of the plate f in order that the pivot bolt 7 of the link may have play in said slot and thus readily permit the deviation from the vertical of the suspension I device.

What I claim as my invention as desire to secure by Letters Patent of the United States is:

ing a plurality of helical springs located side by side between the vehicle frame and an axle supporting member; housings on said frame and supporting member to re-- ceive the opposite ends of the springs; rigid o brackets secured to the frame in front of and behind said springs; suspension links pivot ally connected at their inner ends to the axle supporting member and at their outer ends to the free lower ends of said brackets; and a compensating device embodying an auxiliary spring connected at one end with said supporting member, and a vertical lever connected at its lower end with the other end of the auxiliary spring and at its upper end with the adjacent bracket, said lever being fulcrumed intermediate its ends on the suspension link associated with that bracket.

In witness whereof I have signed this specification.

JAMES HENRY CHANDLER.

A spring suspension for vehicles, compris- 

